(03-12) 19:34 PDT SAN FRANCISCO -- A teenager was injured when a car hit him in a crosswalk in San Francisco's Lakeside neighborhood Wednesday night, police said.

The teenager was in a crosswalk at Ocean Avenue and Junipero Serra Boulevard about 6 p.m. when a vehicle traveling westbound on Ocean turned left onto Junipero Serra and struck him, said police spokesman Sgt. Eric O'Neal.

Officers cited the driver, whose name was not released, for failure to yield to a pedestrian in a crosswalk and for having no proof of insurance, O'Neal said. The driver is cooperating with the investigation.

Three other pedestrians were injured in vehicle collisions this week.

A pedestrian was hit near Sacramento and Battery streets on Tuesday morning. A 5-year-old boy and his babysitter were hospitalized Monday afternoon after they were struck in a crosswalk by a car near 37th Avenue and Fulton Street.